Evinrude 4906B 4HP 1969 Owner's Manual page 246

amp gauge for the test.
after the test is completed.
Disconnect the shift leads at the rear of
the engine. Temporarily lay a piece of cloth
or other insulating material
to prevent them from shorting out during
the following tests.
Again operate the shift lever and note
the current loss. If the current draw is still
more than 2.5 amperes,
short in the control box switch or wiring. If
the current draw is normal with the leads
disconnected from the engine, then check
for a short in the gear case coilts) or wiring.
If the coil leads are shorted to each other,
both shift coils would be energized,
the engine or causing serious damage to the
dr iveshaf
t,
3- Shift Coil Tests
Testing the shifting coils is accomplished
by first disconnecting the wires at the rear
of the engine. Next, connect an ohmmeter
first to one shift coil lead and ground, and
then to the other in the same manner.
reading of more than
cates a short in the coil or lead. No reading
at all indicates an open circuit.
results of this test indicate
cirucit , the lower unit must be disassembled
and inspected. See Chapter 8.
4- Testing Shift Switch - Forward
To test the switch for the FORWARD
position, make contact with one probe of a
continuity meter (or a test light)
terminal (purple or red lead) and to the
forward (green lead) terminal with the other
probe. Now, move the shift lever to the
FORWARD position.
cate continuity (or the test light come on),
Replace the wires
under the wires
then check for a
stalling
1+.5 to 6.5 ohms indi-
If the
a short in the
to the
The meter should indi-
ELECTRIC GEAR BOXES
when the shift lever is in the FOR WARD
position.
5- Testing Shift Switch - Reverse
To test
make contact with one probe of a continuity
meter (or test light),
A
ple or red lead) and to the reverse terminal
(blue lead) with the other probe.
shift lever to the REVERSE position.
The meter should indicate continuity (or
the test light come on), when the lever is in
the reverse position.
6- Testing Shift Switch - Neutral
After the forward and reverse tests have
been completed
the shift lever in the NEUTRAL position.
Leave the red lead connected and check the
blue lead (REVERSE) and the green
(FORWARD). Continuity should not be indi-
cated when the shift handle is in NEUTRAL.
the shift switch for reverse,
to the terminal (pur-
check for continuity
7-13
Move the
with
lead